Rachel Potter and Khaya Cohen went head-to-head in the sing-off as the two acts with the fewest votes in the top 12.

New Yorker Cohen won the majority of the judges' votes with a rendition of Joe Cocker's 'Don't Give Up On Me', while Potter only managed to gain the support of her own mentor, Kelly Rowland, after performing Shania Twain's 'From This Moment'.

Sweet Suspense's Millie Thrasher said: "I think we're so grateful to be here. The fact that you guys put us together gave us a whole new experience that we would have never thought of otherwise. And I'm so glad I have these two amazing girls to stand by."